[Help-glpk] Two questions about optimize

Hi, I have two questions. 1. I have solved a complex problem which takes more than 3 seconds, but when use this command ‘--mipgap 0.19’, it consumes only 322s and these two answers are completely the same. Why does this happen? 2. This problem is non-convex because of constraints, but I

[Help-glpk] about Vba/glpk dll

Dear Mr.Marc or Whom it may concern, i have been looking for the interface between VBA and glpk for a long time. (and i learned that there is no direct interface) i read your article in the forum and found the two links you posted- http://www.informatikfuchs.de/Software/GLPK/glpkVB_Eng.htm

[Help-glpk] adv_basis is not silent

Hi The glp_adv_basis() prints Crashing..., even if the the LPX_K_MSGLEVEL is set to zero. Is this function safe, what does the message means? Best, Balazs ___ Help-glpk mailing list Help-glpk@gnu.org

Re: Re[Help-glpk] garding speeding up MIPs by providing Initial solutions

Hi, I am suffering from the same problem. I have tried all the following but none works. glp_scale_prob(lp, GLP_SF_AUTO); glp_adv_basis(lp, 0); glp_simplex(lp, NULL);